,2. STENo. 233 



ft. in. 



Length of animal, entire 5 11 



Length, of pectoral 1 1 



Width of tail 1 11 



There is a skull in the Paris Museum marked "D. pluwheus, Mala- 

 bar, Dvssumier." It measures as follows : Length 22 inches, beak 

 13|, teeth-Hne 12, width at notch 4^, symphysis of the lower jaw 5| 

 inches ; teeth |7 || , large ; bpakelpngated, higher than wide, com- 

 pressed in front ; triangle extending rather before the teeth-lines. 

 In the Anatomical Museum pf the Jardin des Plantes is a skull of 

 a foetal specimen of this spepies, from Malabar, which is 12 inches 

 long, with the beak 8^ inches long, and 2| in, wide at the notch. The 

 symphysis of the lower jaw is 2| inches long. The bones are not 

 united. The upper teeth are 36 j they are as large as those of the 

 adult skuU, and all enclosed. in a, cartilage and very close together. 

 From this skull it is evident that these animals are born with the fuU 

 number of teeth, which only elongate as they gradually develope. 



2. Steno roseiventris. • 



Greyish black above, under half rosy white ; orbit, streak from eye 

 to the pectoral, and pectoral fin dusky. Beak elongate, slender. 

 Beak of skull very long, half as long again as the brain-cavity. 

 Teeth il-ii. 



Delphinus roseiventris, Pucheran, Voy. Dumont W TJrmHe, t. 22. f . 2, 

 t. 23. f. 3, 4 (skull). 



Inhab. Molucca. 



The skuU of a Davjphin a ventre round from Molucca, in the Paris 

 Museum, has the nose very slender, attenuated. Palatal bone and 

 intermaxiUkries distinctly seen below ; intermaxiUaries very convex, 

 dense ; lower jaw very compressed in front ; palate flat, rather con- 

 vex on each side behind, very spongy. 



■ 3. Steno frontatus. The Fronted Dolphin. 



.Nose of skull about three-fifths of its entire length, three times as 

 long as its width at the notch, rather compressed, rounded in front. 

 Lower jaw subangular and bent up at the end, united about one-third 

 of its length. Teeth l\ || , often rather rugose. 



Skin rough, back greyish black, belly dirty white. Female 9 feet 

 long. — Dr. Dickie. , 



Delphinus ftontatus, Cm. Oss. Foss. v. t.' 2L f. 7, 8, t. 22. f. 8 ; H. A. 



i. 288 ; Gray, last Mamm. B. M. 105 ; Owen, Cat. Osteal. Coll. Mm. 



Cott. Surg. ii. 453. 

 T>; Eeinwardtii, Schhgd, Abh. i. 21. t. 2. f. 3, 4, t. 4. f. 7 (skull and 



teeth), 

 Steno frontatus, Gray, Zool. Erehaa ^ Terror, 4,3 ; Cat. Cetac. S. M. 



1850, 128 ; Ebyth, Cat. Mus. Asiatic Soc. Bengal, 91. 



Inhab. Indian Ocean. Bay of Bengal (Oapt. Lewis, 1846). Eed 

 Sea (Ji Owen, Esq., 184^). Pacific. 



